Here is the full list of all 54 Baldur's Gate 3 achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Claim your Throne of Blood: take control of the Netherbrain for Bhaal and break the world.
Make the ultimate sacrifice: become a mindflayer to defeat the Netherbrain.
Finish the game (with a heartfelt 'thank you!'' from Larian Studios).
Reign with terror: take control of the Netherbrain and bend the world to your will.
Save every tiefling refugee you can throughout the game in a single playthrough.
Complete the game in Tactician mode.
Kill the Red Dragon in the Upper City.
Defeat Gortash in Wyrm's Rock without activating any traps.
Romance the Emperor.
In the Wyrmway, wait until the dragon is midflight, then knock it out of the sky - KAPOW.
Go on a date with Karlach - now that's playing with fire.
Break Wyll's Pact with Mizora.
Rescue Sazza from the Emerald Grove, Goblin Camp, and Moonrise Towers in one playthrough.
Kill the Surgeon before he performs surgery on you in combat.
Become Bhaal's ultimate weapon - become his Slayer.
Save the day: kill the Netherbrain and destroy the Absolute tadpoles.
Craft an item in the Adamantine Forge.
Kill the Adamantine Golem without using the Forge Hammer.
Kill the Spider Matriarch before her eggs hatch - why do they have so many legs?
Pet Scratch and the Owlbear cub at the same time - the greatest joy an adventurer could ask for.
Find and summon the quasit Shovel. Or is her name... Fork? Maybe Basket?
Kill Orin while her cultists are performing their ritual chant.
Coat the streets of Baldur's Gate in blood - become an Unholy Assassin of Bhaal.
Multiclass into every class in one playthrough without asking Withers to change your character.
Defeat twenty opponents while a party character is drunk in a single playthough - down them.
Defeat Commander Zhalk in the Nautiloid.
Long Rest using only alcohol - a time-honoured dwarfish tradition.
Use one enemy as an improvised weapon against another.
Break out of prison after being arrested - aren't you daring?
Earn a hundred gold from playing sweet, sweet music in a single playthrough.
Recruit a hireling. You can befriend them or use them as cannon-fodder - we won't judge.
Leave Act Two - Baldur's Gate is just over the horizon.
Defeat the Apostle of Myrkul before it consumes any Necromites.
Ally with Voss against the Githyanki God-Queen. Good luck.
Steal the Blood of Lathander from underneath Rosymorn Monastery.
Read 100 different books in a single playthrough. Adventuring isn't just daring quests, you know.
Perform five attacks in one turn. Your enemies won't know what hit them (literally).
Rescue all the prisoners from the depths of Moonrise Towers in one playthrough.
Defeat the Toll Collector without her using gold against you - excellent budgeting.
Gift Shadowheart a night orchid - her favourite flower. Always knew she was a softie.
Stablise Gale's Netherse orb.
Leave Act One - for somewhere altogether darker.
Create three unique alchemical solutions in a single playthrough - bottoms up!
Play fetch with Scratch - the best boy in the Realms.
Let Astarion bite you - ouch.
Consume a parasite and unlocked a new power - is it meant to wriggle the whole way down?
Kill a character with an unarmed strike.
Take four full long rests in a single playthrough - adventuring's tiring work.
Complete ten background goals in a single playthrough - you are one with your character.
Dig up five buried chests in a single playthrough - treasure!
Successfully use Detect Thoughts to pry into someone's thoughts.
Kill a creature with falling damage.
Take control of the Nautiloid and escape the hells.
Complete the game in Honour mode.